So today, we are talking about trains. Isn’t it fascinating to watch a single locomotive pulling dozens of wagons at such incredible speed! I remember when I was a kid, I used to sit on the railway platforms waiting for a fast train to pass by & enjoy the loud sounds of locomotives & gust of wind. Ah, those were the days! Anyway, let’s know why do some trains have multiple engines or to be precise why trains have locomotives at the rear end, because that’s what you came here for. more “Why do trains have locomotives at the rear end ?”
Just leave everything aside & have a look at these sophisticated & elegant furniture made by a Calfornian company named – MotoArt, which takes furniture to a whole new level of innovation. MotoArt is a company which makes furniture by recycling old parts of military & commercial airplanes. All our home furniture are ordinarily made up of wood, glass or plastic & you can buy them by getting huge discounts through Pepperfry Coupons unlike these amazing stuff… because great things come at a great price ! more “MotoArt – Company which makes furniture from retired airplanes !”
Rotary/gnome engines were used to power aircrafts during WW-I & radial engines during WW-II. Then came the era of jet engines which completely revolutionized the aviation technology ! Jet engines were very much efficient & powerful than those used during World wars ! The power jet engines deliver is so high that an airplane weighing hundreds of tons lifts off the ground with such ease. How are they capable of producing so much of power/thrust ? So lets not waste our time & have a look on how do jet engines work ?more “How do Gas turbines or Jet engines work ?”
In my previous article, we learned how 4 stroke engines work ! This time we will learn about the second type of engine i.e 2 stroke engine. The 2 stroke engine is a type of Internal combustion engine where one power cycle is completed with two strokes of the piston during only one rotation of crankshaft. The first commercial two-stroke engine involving in-cylinder compression is attributed to Scottish engineer Dugald Clerk.
The 2 stroke engine performs all the same steps which are performed by 4 stroke engine – suction, compression, expansion & exhaust; but the 2 stroke engine performs these all steps in only 2 stroke unlike the 4 stroke engine which completes one power cycle in 4 strokes. more “How does a 2 stroke engine work ?”
These are the most basic engines used in cars & bikes i.e Four stroke cycle petrol engine OR 4 stroke engine(often called). It is very easy to understand until & unless you wanna do all the thermodynamic calculations & all that stuff ! more “How does a 4 stroke engine work ?”
Imagine you are on-board a ship & what would be the worst thing that would happen to you ? – the water flooding inside the ship making it sink to the seabed…damn…! So we need something which ensures either it doesn’t sink OR even after sinking, all be safe. So in simple words – a Submarine is a vehicle which allows us to travel on water as well as deep inside the seas & oceans. Also a submarine is used in military for protection purposes. more “How does a submarine work ?”
NASA has performed a nearly 9 minute long test of the engine called RS-25 which will be used for next generation mega-rockets which will take the astronauts to Mars & other deep space missions.
The agency successfully tested an RS-25 engine at Stennis Space Center in Mississippi. A total of four RS-25 engines will be used to power the SLS rocket (Space Launch System).
The engine was tested for 535 seconds, which is the same amount of time the engines will fire uring actual SLS launch.
The test was the sixth of seven planned hot-fire trials for the RS-25, which also served as the main engine for NASA’s now-retired space shuttle fleet, ‘Space.com’ reported. The seven-test series is “designed to put the upgraded former space shuttle main engines through the rigorous temperature and pressure conditions they will experience during a launch,” NASA officials said.
“The tests also support the development of a new controller, or ‘brain,’for the engine, which monitors engine status and communicates between the vehicle and the engine, relaying commands to the engine and transmitting data back to the vehicle,” the officials added.
Watch the miraculous masterpiece of mechanical, thermal & cryogenic engineering in action ! The raging RS-25 – (must watch; feel the power)
